Bangle.showLauncher() - not showing launcher

I have 3 launchers on my bangle with .info files as below.
None of them will launch by Bangle.showLauncher().

dtlaunch.info

{"id":"dtlaunch","name":"Desktop Launcher","type":"launch","src":"dtlaunch.app.js","icon":"dtlaunch.img","version":"0.03","files":"dtlaunch.info,dtlaunch.app.js,dtlaunch.img"}

and launch.info

{"id":"launch","name":"Launcher","type":"launch","src":"launch.app.js","sortorder":-10,"version":"0.04","files":"launch.info,launch.app.js"}

and tapelauncher.info

{"id":"tapelauncher","name":"Tape Launcher","type":"launch","version":"0.01","files":"tapelauncher.info,tapelaunch.app.js,tapelaunch.img"}